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Finding the Fourth Proportional to 352,423.81, 486,345.09 and 191,278.86

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Solution

The fourth proportional to 352,423.81, 486,345.09 and 191,278.86 is: 263,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,423.81 : 486,345.09 = 191,278.86 : x
  2. Step 2: Convert to fraction form
    352,423.81/486,345.09 = 191,278.86/x
  3. Step 3: Cross multiply
    352,423.81x = 486,345.09 × 191,278.86
  4. Step 4: Simplify right side
    352,423.81x = 93,027,530,993.68
  5. Step 5: Solve for x
    x = 93,027,530,993.68/352,423.81
  6. Step 6: Final answer
    x = 263,964.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.